Travertine
Travertine Technologies is a Boulder, Colorado-based climate technology company that uses a proprietary electrochemical process to convert industrial sulfate waste and captured CO2 into sulfuric acid, purified phosphoric acid, calcium carbonate, and permanent carbon removal credits, serving fertilizer, cement, battery, and critical minerals customers.
- Company typePrivate
- Founded2022
- HeadquartersBoulder, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Travertine does
Travertine Technologies, Inc. is a Boulder, Colorado-based climate technology company founded in 2022 as a UC Berkeley spin-off that has developed a proprietary electrochemical process, branded the Travertine Process, to permanently mineralize carbon dioxide into carbonate materials while co-producing sulfuric acid, purified phosphoric acid, calcium carbonate, and green hydrogen from industrial sulfate waste streams such as phosphogypsum, mine tailings, and flue-gas gypsum.
The company's platform addresses four industrial problems simultaneously: the accumulation of more than 1 billion tons of phosphogypsum waste (notably in Florida), volatile sulfur supply chains (sulfur prices have tripled and are exposed to Strait of Hormuz geopolitical risk), high carbon emissions from cement and fertilizer production, and the need for domestic supply chains of critical minerals for LFP batteries and food security. Technical performance metrics reported include greater than 98% gypsum-to-calcium-carbonate conversion efficiency, greater than 95% sulfur recapture, 100% ore concentrate utilization versus approximately 50% industry standard in phosphate processing, and 0.75 tonnes of CO2 mineralized per tonne of phosphoric acid produced.
Travertine monetizes through three revenue streams: direct sales of chemical products (sulfuric acid, purified phosphoric acid, calcium carbonate), permanent carbon dioxide removal credits issued via the Isometric registry under ICVCM-approved protocols (with the first commercial plant projected to remove over 10,000 tonnes of CO2 between 2028-2030), and potential technology licensing to industrial partners. The company currently operates a 125-tonnes-per-year demonstration plant in Wayne County, New York in partnership with Sabin Metal Corporation, an R&D headquarters in Boulder, Colorado, and has signed a joint venture framework with Arianne Phosphate for a demonstration plant in Quebec targeting the LFP battery supply chain. To date, Travertine has raised $11.5 million in total funding, with strategic backing from Holcim's MAQER Ventures, Frontier, Clean Energy Ventures, Grantham Environmental Trust, and ARPA-E.
Travertine firmographics
Firmographics- Name
- Travertine
- Legal name
- Travertine Technologies, Inc.
- Website
- https://travertinetech.com
- Company type
- Private
- Founded year
- 2022
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Travertine Technologies is a Boulder, Colorado-based climate technology company that uses a proprietary electrochemical process to convert industrial sulfate waste and captured CO2 into sulfuric acid, purified phosphoric acid, calcium carbonate, and permanent carbon removal credits, serving fertilizer, cement, battery, and critical minerals customers.
- Ownership category
- akta.pro rank
Travertine industry classification
Industry- Product category
- Industrial Chemicals
- NAICS
- Basic Chemical Manufacturing (3251), Other Basic Inorganic Chemical Manufacturing (325180), Phosphatic Fertilizer Manufacturing (325312), Fertilizer and Compost Manufacturing (32531), Industrial Gas Manufacturing (32512)
- SIC
- Industrial Inorganic Chemicals (2810)
- akta.pro primary industry
- Waste-to-Energy (Incineration/RDF) & Landfill Gas Recovery (IMAIAFAK)
- akta.pro secondary industry
- Industrial Waste-to-Energy (Non-Hazardous Process Wastes) (EUACAIAI)
Keywords
Where Travertine is headquartered
LocationHeadquarters
- HQ city
- Boulder
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
Travertine business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Operations, Infrastructure, Supply Chain, Marketing or Sales
Revenue model
- Chemical Products Sales: Sale of sulfuric acid, purified phosphoric acid, and cementitious materials (calcium carbonate) produced from waste upcycling. The demonstration plant produces 125 tonnes/year of sulfuric acid and calcium carbonate.
- Carbon Dioxide Removal Credits: Sale of carbon removal credits generated through permanent CO2 mineralization. Isometric has been selected as the registry for Travertine's first commercial plant expected to remove over 10,000 tonnes of carbon between 2028-2030.
- Technology Licensing: Potential licensing of the Travertine Process technology to industrial partners for deployment at their facilities.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Multi-year contract | B2B industrial chemical sales - pricing based on volume contracts |
Go-to-market motion3 records
Distribution channels3 records
Marketing channels5 records
Travertine product offering
Product offeringCore offering
Travertine operates an electrochemical process that converts industrial sulfate waste streams (gypsum, phosphogypsum, mine tailings) and captured CO2 into valuable industrial chemicals. The company produces and sells purified phosphoric acid, fossil-free sulfuric acid, cementitious materials (calcium carbonate), and carbon dioxide removal credits for industrial buyers in fertilizers, cement, battery materials, and critical minerals sectors.
Product overview
Travertine offers a portfolio of four core products produced through its proprietary electrochemical process: Purified Phosphoric Acid for food/beverage and LFP batteries, Sulfuric Acid for critical minerals extraction, Cementitious Materials for low-carbon concrete, and Carbon Dioxide Removal Credits from permanent mineral sequestration. The Travertine Process converts industrial sulfate waste into these valuable chemicals while capturing and permanently storing CO2, eliminating traditional byproducts like phosphogypsum.
Differentiator
Problem solved
Functional benefit
Products and services
- Purified Phosphoric Acid Phosphoric acid produced through Travertine's electrochemical process that eliminates phosphogypsum waste. Used in food and beverage, water treatment, and LFP (lithium-iron-phosphate) batteries for vehicles and grid storage.
- Sulfuric Acid Fossil-free sulfuric acid produced through Travertine's electrochemical process that recycles sulfate waste streams. Used in critical element extraction including lithium, copper, and phosphate processing for fertilizers.
- Cementitious Materials Calcium carbonate (or slaked lime) transformed from gypsum waste for use in concrete and cement production. Enables low-carbon cement and creates collaboration between the phosphate and cement industries.
- Carbon Dioxide Removal Credits Permanent carbon dioxide removal credits generated through Travertine's mineralization technology. CO2 is captured from air and geologically permanently sequestered in minerals, with removals directly measured to reduce MRV uncertainty.
Quantifiable outcome
- >98% gypsum-to-calcium carbonate conversion efficiency
- +5 more outcomes
Companies that use Travertine
Customer profileNamed customers1 record
Segments4 records
Ideal customer profiles5 records
Travertine technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Travertine partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core, minor and secondary.
- Arianne PhosphatecoreJoint Venture Framework Agreement for producing purified phosphoric acid (PPA) using Travertine's proprietary sulfur-free, gypsum-free electrochemical process combined with Arianne's high-purity phosphate concentrate from Quebec's Lac à Paul project. Pilot-scale testing successfully completed achieving over 95% sulfur recapture. Companies advancing toward demonstration plant in Saguenay-Lac-Saint-Jean region, targeting LFP battery supply chain.
- Saudi Arabia BRIDGE ProgramminorSelected as one of 15 high-tech startups to attend the Future Minerals Forum as part of Saudi Arabia's Bridge Initiative, sponsored by the Ministry of Industry and Mineral Resources.
- IsometriccoreTravertine selected Isometric as the registry and verification provider for its first commercial plant. Isometric will issue carbon credits based on its ICVCM-approved DAC Protocol using the Certify platform for verification. Expected to remove over 10,000 tonnes of carbon between 2028-2030.
- Mark1secondaryProgram agreement with Mark1 to help develop a commercial plant utilizing Travertine's proprietary technology to produce sustainable phosphoric acid for North America. Mark1 provides guidance on siting, permitting, and investor feedback.
- Sabin Metal CorporationcorePartnership to construct demonstration plant near Rochester, NY that converts waste gypsum and CO2 into sulfuric acid, green hydrogen, and calcium carbonate. Travertine supplies sustainable sulfuric acid for Sabin's refining operations while capturing and sequestering CO2. Local partner for Travertine's first commercial deployment.
- AmrizesecondaryFeatured at CONEXPO-CON/AGG as a key innovation company providing next generation, low-carbon building materials. Amrize (NYSE:AMRZ) is North America's leading building materials company.
Scale indicators8 records
Recent moves8 records
Expansion highlights6 records
Travertine competitors and assessment
Company assessmentDirect peers
- CarbonCure Technologies: CarbonCure Technologies mineralizes captured CO2 into concrete during the cement mixing process, making it the most directly comparable peer to Travertine's cementitious materials pathway. Both companies monetize carbon sequestration through cement/concrete and target the same low-carbon cement opportunity, with CarbonCure more mature commercially.
- Phoenix Tailings: Phoenix Tailings uses electrochemical processes to produce critical minerals and metals from mining waste and tailings. Like Travertine, it decarbonizes extractive metallurgy and targets the critical minerals supply chain with electrochemistry — making it a direct peer on the materials-production side of the business.
- CarbonCapture Inc. CarbonCapture Inc. builds direct air capture (DAC) systems paired with permanent mineralization for carbon sequestration. Its approach — DAC + mineralization — closely mirrors Travertine's CO2 mineralization pathway, and both target the same ICVCM-aligned CDR credit markets.
- Sublime Systems: Sublime Systems produces low-carbon cement using an electrochemical process that eliminates limestone calcination. It competes directly with Travertine's cementitious materials product line and shares the same target customer base (cement and concrete producers like Holcim).
- Heirloom Carbon: Heirloom Carbon uses DAC technology that leverages limestone's natural ability to absorb CO2, with permanent sequestration. It is one of the most-funded CDR startups and a direct comparable to Travertine on the carbon removal credit revenue stream and the ICVCM/Isometric protocol pathway.
Emerging players
- Lithos Carbon: Lithos Carbon enhances the natural weathering of basalt to permanently sequester atmospheric CO2. It is comparable to Travertine as an emerging mineralization-based CDR company but uses a different approach (distributed rock weathering vs in-process electrochemical mineralization).
- CarbonOrO: CarbonOrO converts CO2 into chemicals and fuels using a proprietary electrocatalytic process. It is comparable to Travertine's CO2-to-chemicals value proposition, though it focuses on different end products (CO2-derived fuels and building materials) than Travertine's phosphoric/sulfuric acid focus.
- Charm Industrial: Charm Industrial converts biomass into a bio-oil that is then sequestered underground for permanent CDR. It is comparable as a Frontier-backed CDR company selling ICVCM-aligned removal credits, though it uses a different sequestration pathway (geological injection of bio-oil) than Travertine's mineralization.
Broad incumbents
- 1PointFive (Occidental): 1PointFive is Occidental's DAC subsidiary operating the largest DAC facility (STRATOS) in the world. It is a broad incumbent comparable on the carbon removal credit business but operates at vastly larger scale than Travertine and uses a different capture pathway (sorbent-based DAC with geological sequestration).
- Mosaic Company: Mosaic is one of the world's largest phosphate producers, generating significant phosphogypsum waste in Florida. It is a broad incumbent comparable as both a potential Travertine customer (seeking alternatives to phosphogypsum stacking) and a competitive threat (with massive scale and integrated sulfur-burning operations).
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks7 records
Key highlights7 records
Customer concentration
Travertine social profiles
Digital presenceTravertine financial estimates
Financial estimateRevenue estimate
Valuation estimate
Travertine leadership team
Management profileNumber of profiles
Profiles2 records
Travertine funding detail
Funding detailFunding overview
Funding rounds3 records
Investors5 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Travertine M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Travertine
What does Travertine do?
Travertine operates an electrochemical process that converts industrial sulfate waste streams (gypsum, phosphogypsum, mine tailings) and captured CO2 into valuable industrial chemicals. The company produces and sells purified phosphoric acid, fossil-free sulfuric acid, cementitious materials (calcium carbonate), and carbon dioxide removal credits for industrial buyers in fertilizers, cement, battery materials, and critical minerals sectors.
Is Travertine a public or private company?
Travertine is a private company. It is classified as venture growth investor backed and is currently operating.
When was Travertine founded?
Travertine was founded in 2022. It employs 11 to 50 people.
Where is Travertine based?
Travertine is headquartered in Boulder, United States, in the North America region.
How does Travertine make money?
Three revenue lines are on record. Chemical Products Sales are the primary driver. The others are carbon Dioxide Removal Credits and technology Licensing.
Who are Travertine's main competitors?
Direct peers on record are CarbonCure Technologies, Phoenix Tailings, CarbonCapture Inc., Sublime Systems and Heirloom Carbon. Emerging players are Lithos Carbon, CarbonOrO and Charm Industrial. Broad incumbents are 1PointFive (Occidental) and Mosaic Company.
Does Travertine have an API?
No public API is recorded for Travertine.
What industry is Travertine in?
Travertine's product category is Industrial Chemicals. Its primary akta.pro industry code is IMAIAFAK, Waste-to-Energy (Incineration/RDF) & Landfill Gas Recovery, with a secondary code of EUACAIAI, Industrial Waste-to-Energy (Non-Hazardous Process Wastes). Its NAICS code is 3251 and its SIC code is 2810.